Nissan Juke Service and Repair Manual : System

System Diagram

System Description

System Description

Supplemental Restraint System (SRS) activates air bag module and seat belt pre-tensioner when it detects a frontal collision or a side collision that is more than the specified limit.

Together with other safety devices, it reduces the impact that occupant receives when vehicle collision occurs.

Air bag diagnosis sensor unit supplies power supply to air bag module and pre-tensioner seat belt when deceleration that is more than the specified limit is detected by G sensor in air bag diagnosis sensor unit, crash zone sensor, satellite sensor.

Air bag module is composed of electric igniter (squib), filter, pyrotechnic material, and gas generating material.

When air bag module receives a signal from air bag diagnosis sensor unit, air bag module ignites pyrotechnic material using electric igniter (squib) so that gas generating material generates high temperature nitrogen gas.

The gas through filter activates air bag. At the same time, pre-tensioner seat belt receives power supply from air bag diagnosis sensor unit, gas generator is activated, and then gas is generated.

Balls in pipe are moved according to generated gas pressure and strike pinion gear on ELR shaft.

ELR shaft rotates and retracts seat belt


Air bag diagnosis sensor unit has the following functions.

Detects a collision and supplies the energy for deploying air bag and seat belt pre-tensioner.

Detects and records electrical malfunction in air bag system and seat belt pre-tensioner system, and blinking air bag warning lamp.

Detects and records the deployment of air bag and seat belt pre-tensioner, and turns ON air bag warning lamp.

Indicates malfunctioning portion via the number of blinks from the air bag warning lamp in the diagnosis mode.

Indicates the malfunction record via CONSULT-III.


The operation of SRS is different depending on the collision modes applications. For example, the driver air bag module, passenger air bag module, and seat belt pre-tensioner are activated in a frontal collision or side collision.

SRS configurations that are activated for the following collision modes.

Diagnosis system (air bag)

    Component parts
    Component Parts Location 1. Combination meter Refer to MWI-4, "METER SYSTEM : Component Parts Location". 2. Combination switch (spiral cable) 3. Driver air bag module Crash zone sen ...

    Diagnosis system (air bag)
    Description CAUTION: Never use electrical test equipment on any circuit related to the SRS unless instructed in this Service Manual. SRS wiring harnesses can be identified by yellow and/or oran ...

    Other materials:

    Differential side oil seal
    Exploded View 1. Transaxle assembly 2. Differential side oil seal (left side) 3. Differential side oil seal (right side) : Vehicle front : Always replace after every disassembly. : Genuine NISSAN CVT Fluid NS-2 Removal and Installation REMOVAL NOTE: Cap or plug openings to prevent flui ...

    Reporting safety defects
    For USA If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying NISSAN. If NHTSA receives similar complaints, it may open an investi ...

    Rear fog lamp circuit
    Component Function Check 1.CHECK REAR FOG LAMP OPERATION CONSULT-III ACTIVE TEST 1. Select RR FOG LAMP of BCM (HEAD LAMP) active test item. 2. With operating the test items, check that the rear fog lamp is turned ON. On : Rear fog lamp ON Off : Rear fog lamp OFF Is the inspection result nor ...